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Title

Finite‐horizon optimal trajectory control of near space hypersonic vehicle with multi‐constraints.

Authors

Xia, Rongsheng; Bu, Chunlei; Yan, Xiaohui; Zhou, Tongle

Abstract

In this article, a finite‐horizon optimal trajectory control strategy is developed for near space hypersonic vehicle (NSHV) longitudinal model with multi‐constraints including external disturbance, system modeling error, and input saturation. The whole control process has two parts: inner‐loop attitude control and outer‐loop trajectory control. First, the feedback linearization method is applied to design a tracking controller for outer‐loop system, and reference signals for inner‐loop attitude control can be obtained using Newton iteration method. Second, for the inner‐loop attitude system with multi‐constraints, a finite‐horizon optimal tracking control scheme consists of feedforward control input and adaptive dynamic programming based optimal feedback controller is designed. In this way, not only the adverse effects of above multi‐constraints are eliminated, but also the optimally tracking performances are guaranteed. Finally, the Lyapunov analysis method is utilized to ensure the stability of the entire closed‐loop control system, and simulation tests with respect to NSHV longitudinal trajectory tracking are supplied to verify the availability of the proposed strategy.

Subjects

HYPERSONIC planes; SPACE vehicles; CLOSED loop systems; DYNAMIC programming; NEWTON-Raphson method; ADAPTIVE control systems

Publication

Optimal Control - Applications & Methods, 2024, Vol 45, Issue 1, p302

ISSN

0143-2087

Publication type

Academic Journal

DOI

10.1002/oca.3058

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